Quick Start Guide

mount /dev/sda6 /mnt

mount --bind /dev /mnt/dev

2 Now you can “change root” into the new environment:

chroot /mnt

Then mount /proc and /sys:

mount /proc

mount /sys

4 Finally, mount the remaining partitions from the installed system:

mount -a

5 Now you have access to the installed system. Before rebooting the system,

unmount the partitions with umount -a and leave the “change root” environ-

ment with exit.

WARNING: Limitations

Although you have full access to the les and applications of the installed system,

there are some limitations. The kernel that is running is the one that was booted

with the rescue system, not with the change root environment. It only supports

essential hardware and it is not possible to add kernel modules from the installed

system unless the kernel versions are exactly the same (which is unlikely). So

you cannot access a sound card, for example. It is also not possible to start a

graphical user interface.

Also note that you leave the “change root” environment when you switch the

console with [Alt] + [F1] to [Alt] + [F6].

Modifying and Reinstalling the Boot Loader

Sometimes a system cannot boot because the boot loader conguration is corrupted.

The start-up routines cannot, for example, translate physical drives to the actual lo-

cations in the Linux le system without a working boot loader.

To check the boot loader conguration and reinstall the boot loader, proceed as fol-

lows:

1 Perform the necessary steps to access the installed system as described in

Section “Accessing the Installed System” (page 153).

2 Check whether the following les are correctly congured according to the

GRUB conguration principles outlined in Chapter 17, The Boot Loader GRUB

(↑Reference) and apply xes if necessary.

154 Start-Up